Kaiyu is a distinctive boys' name in United States, ranking #10231 in 2003 with 6 recorded births. This places Kaiyu in the bottom 20% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2001 with 10 births ranking #6707. In 2003, approximately 1 in every 329,212 boys born was named Kaiyu. STABLE Recent data shows the name is currently stable.